Excavation multiple-section casing or cistern



Sept. Z, 1930. F. C. BAUER, JR

ExcAvATIoN MULTI/PLE SECTION cAsIe on cIlsTERN Filed July 25, 1927ATTORNEY INVENToR WITNESS Patented Sept. 2, 1930 PATENT OFFICE FREDERICKC. BAUER, JR., OF CAMDEN, NEW JERSEY .,EXCAVATION,MULTIPLE-SECTIONCASING OR CISTERN Application filed July v25, 1927. Serial No. 208,394.

This Vinvention relates to the art of plumbing and appliances for'facilitating plumbing work, and more especially to an excavatingmultiple section casing or cistern, and an important purpose of thelinvention is to provide, in a device vof this kind, a construction forsaving life and at the same time to ex-v pedite excavating.

In the plumbing industry it is very often A necessary t0 excavate holesfor the installation of plumbing, such as water mains, sewers andvarious piping from the mains into variousr buildings. It frequentlyoccurs that such excavations cave in at their sices and bury the laborerand therefore endanger life, as it is very difficult at times toextricate the laborer in time. At present it is customary to board upthe -wall of the excavation, and even under these conditions, there aretimes when the wall oi the excavation caves in.

Therefore it is the purpose of the present invention to provide animproved multiple section excavating casing or cistern, which '25 may belowered into the excavation step by step, that is section by section,and when the casing or cistern has been lowered according to the depthof the excavation desired, the wall of the excavation or hole isprevented from cavin in on the laborer, therefore avoiding endangeringlife.

In a device of this character it is another purpose to provide amultiple section or cistern, wherein the sections are nested on the rsurface of the ground at the location where the excavation is Vto bemade, that is the sections are telescopically nested. As the excavationdeepens the smaller section lowers correspondingly, and likewise thesucceeding sections, and when the sections are properly positioned inthe excavation there are means so interconnecting the sections andsupporting the sections consecutively from the bottom to the top as toretain the casing or cistern in position.

Y A further purpose is to provide each of the cisterns from the topsection to the bottom section with exterior round rings or hoops, whichare welded to the sections thereby providing annular shoulders to restupon and engage with similar interior annular shoulders at the loweredge of the sections, so that the sections may be consecutivelysupported from the top to the bottom of the excavation.

A still further purpose is to provide suitable handles formed on theexterior shoulders or hoops, so that hooks depending from a clevis link(which may be suspended from a tripod supported pulley and chain orrope) so that the several sections may be extricatcd or removed afterthe piping or plumbing has been installed.

A still further purpose is to provide the several sections of the casingor cistern with the plurality of foot or hand holds, by which a laborermay climb out of the casing when the excavation is complete, or as thesections are removed. In other words the laborer may climb out a certaindistance from the bottom section to the adjacent section and connect thehooks to the bottom section and when it is removed he may climb to thenext section and so on until the several sections are entirely removedand the laborer likewise out of the excavation.

It is to be understood that the particulars herein given are in no waylimitive, and that while still keeping within the scope of theinvention, any desired modification of details and proportions may bemade in the construction ofthe appliance according to circuml stances.

The invention comprises further features and combination of parts to behereinafter set forth, shown in the drawings and claimed.

In the drawings:

Figure l-is a view in section showing the top section in a position,when the excavation c Figure 4-is an enlarged detailed section 10 hookor shoulder, and its handles as having been welded to the sections.

Figure 5#is a view of a modifiedy construcf tion of handle.

Figure 6-is a top plan view of one of the sections. l Y

Referring to the drawings, 1 identifies an excavation, and 2 themultiple section casing or cistern, which comprises a plurality lofsections 8, 1, 5, Gand 7, it being understood that any number ofsections may be employed and they may be any height or diameter.However, the sections fromvthe top to the bottom of the casing are ofgradual decreasing diameter, so that the various sections may be nestedand telescopically connected one within the other from the top to thebottom of the casing.

The severall sections are provided with hand or foot holds 8, by which alaborer may climb out of the cistern or casing at any time andparticularly when the excavation is coinpleted.

In order to support the various sections in consecutive yorder from thetopto the bottom of the casing, the sections areprovided with exteriorshoulders or hoops 9, which are in the form of round rings welded orotherwise Theinvention having been set forth what l `telescopicallywithin'a preceding section, the

last mentioned rings having diametrically opposite loop handles, saidhandles being directed upwardly and deflected inwardly and formed fromthe rings themselves, theA construction and arrangement of the handlesbef ing such as to provide for'suflicient space between the handles andvthe preceding section as lto enable extricating hooks to engage withthe handles between the inner surface of the casing and the handles,whereby each section can be lowered into the excavationL or. extractedtherefrom. t f f In testimony whereof he axes his signature.

secured to the exterior ofthe sections as atV y 10. These exteriorshoulders engage with similar shoulders 16, which are in the form ofround hoop rings weldedto the innersurface of the sections at theirlower ends. rvThese hoops constituting shoulders are formed with iccintegral handles 11, that is, the hoops are bent as shown causing thehandles to be formed. The handles are deflected inwardly of the casing,so as to permit hooks 12 carried by a elevis .ring 13 suspended from atripod 14, to engage with the hooks between the hooks andthe innersurface of the seetions, as shown clearly iny Figure 3, and asillustrated in the detailed View of Figure 4:. ln other words the` hooksmay engage with the handles from the outside in permitting the wall ofthe casing to retain the handles in position and in engagement with thehandles. y f

However, as shown in Figure 5 the hooks may engage with the handles fromthe inside out. However the sections maybe removed from the excavationin the following manner.

For instance when itis desired to remove the sections the hooks mayengage with the lianl dles of the lowerinost section and such sectionelevated to the surface of the ground by the pulleys and rope and Chainconnections. Then the hooks may again be lowered and engaged with thehandles of the next section and so on until the'several sections havebeen elevated to the surface of the ground and removed.

FREDERICK `o. BAUER', JR, 7

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